{"generatedAt":"2026-10-24T12:11:27.697Z","canonicalUrl":"https://agentbreakwatch.vercel.app/p/mcp-sdk-ts","llmsTxtUrl":"https://agentbreakwatch.vercel.app/p/mcp-sdk-ts/llms.txt","categoryHub":{"slug":"agent-sdks","title":"AI Agent SDKs & Frameworks Breaking-Change Index","url":"https://agentbreakwatch.vercel.app/c/agent-sdks"},"tldrVerdict":"Model Context Protocol TypeScript SDK (@modelcontextprotocol/sdk) is currently at v1.32.2 on NPM (published 2026-10-23), with a 90-day Stability Score of 78/100 (B) and HIGH schema drift risk. Streamable HTTP transport replaces legacy SSEClientTransport defaults; McpServer.registerTool inputSchema requires Zod object shape or JSON Schema draft-2020-12.","package":{"slug":"mcp-sdk-ts","packageName":"@modelcontextprotocol/sdk","registry":"npm","kind":"sdk","subcategory":"MCP Core SDK","displayName":"Model Context Protocol TypeScript SDK","vendor":"Model Context Protocol","githubRepo":"modelcontextprotocol/typescript-sdk","breakingSummary":"Streamable HTTP transport replaces legacy SSEClientTransport defaults; McpServer.registerTool inputSchema requires Zod object shape or JSON Schema draft-2020-12.","schemaDriftRisk":"high","affectedSymbols":["McpServer","StreamableHTTPServerTransport","SSEClientTransport","registerTool"],"migrationBefore":"import { SSEServerTransport } from \"@modelcontextprotocol/sdk/server/sse.js\";\nconst transport = new SSEServerTransport(\"/messages\", res);\nawait server.connect(transport);","migrationAfter":"import { StreamableHTTPServerTransport } from \"@modelcontextprotocol/sdk/server/streamableHttp.js\";\nconst transport = new StreamableHTTPServerTransport({ sessionIdGenerator: () => crypto.randomUUID() });\nawait server.connect(transport);","description":"Model Context Protocol implementation for TypeScript","latestVersion":"1.32.2","latestPublishedAt":"2026-10-23T18:11:38.362Z","recentVersions":[{"version":"1.32.2","publishedAt":"2026-10-23T18:11:38.362Z"},{"version":"1.32.1","publishedAt":"2026-10-05T11:47:50.208Z"},{"version":"1.32.0","publishedAt":"2026-10-02T17:32:51.427Z"},{"version":"1.31.0","publishedAt":"2026-09-28T18:59:36.307Z"},{"version":"1.30.1","publishedAt":"2026-09-23T16:06:59.541Z"},{"version":"1.30.0","publishedAt":"2026-07-27T17:56:01.640Z"}],"releasesLast90d":6,"dependenciesCount":17,"license":"MIT","registryUrl":"https://www.npmjs.com/package/@modelcontextprotocol/sdk","githubUrl":"https://github.com/modelcontextprotocol/typescript-sdk","installCommand":"npm install @modelcontextprotocol/sdk@1.32.2","stabilityScore":78,"stabilityGrade":"B"}}